Going off the Louis XIV analogies made earlier...
Traditionally France was a very decentralized kingdom. The king often controlled little outside of Paris itself, and various Dukes squabbled with one another and occasionally got taken over by a foreign family. Thanks to a hilariously zany series of events, this is how the royal family of England managed to rule more of France than the King of France, which was a pain in the collective royal arse that festered into a brouhaha commonly referred to as the Hundred Years War.
Arguably starting with Louis XI, the Spider King, the French Kings slowly started to centralize. By this I mean that his regents centralized power so that they could rule, only for someone else to knock them off, take over as regent, and continue to centralize. Little Louis outlived them all and took advantage. They knocked England back at great cost.
In the 17th and 18th centuries, however, the real centralization began. Mazarin and Richlieu began it, and Louis XIV grew up to be the Sun King of a much stronger France. But France still excelled in squabbling nobles, much like Orlais.
So he basically created France's own Game. Where the nobles would hang out in Versailles with him, and compete over petty titles and minor bragging rights, like who got to clean the royal bum. (I wish I was kidding. In my family's defense, our French ancestry comes from stout Acadian peasant stock.
) They were so involved sucking up to the king and having their passive-aggressive duels between each other, they simply didn't have the time or inclination to pull a Duke of Burgundy on him.
Cue France becoming the model for centralized absolute monarchies in Europe, grabbing territory left and right, and making enough enemies that his successors would have a hard time of it. The Doctor seducing your favorite mistress and you dying by guillotine, respectively. 
Anyways. 
I'm curious as to how much authority the typical Emperor of Orlais wields, and how involved they are in the Game. If, as I suspect, they are currently embroiled in it even more than everyone else, then that's a huge flaw in Orlais. If an Emperor was able to set the nobility aside as Louis XIV did, however, Orlais could be improved upon, as obnoxious as its nobility is.
Say what I will about Kirkwall, their nobility seems to restrict itself to complaining at the Viscount's manor and the occasional assassination.